Here I share with you a tutorial about Objective-C that might be useful for all those who are new in this programming language:

http://cocoadevcentral.com/d/learn_objectivec/

great! :D

Also a good place to look for information is the apple documentation:
http://developer.apple.com/iphone/library/navigation/index.html

This is very helpful. Thanks for posting it. I am actually beginning to get the hang of it already. Thanks again